Hi guys!! I have a 2001 Black Nissan Maxima. The car pretty much lives in the garage but has seen its fair share of love bugs, scratches, oxidation, and hard water spots. So today decided to do my semi annual top to bottom detailing project. I've been using optimum compound with a lake county yellow pad with my pc. I had the pc on 5 and went very slow making sure to apply the right amount of pressure. I repeated this process about three time. The surface is very smooth but there are still some imperfections that I would like to rid. I can see still some scratches and water marks. Can you guys recommend a more aggressive product that I can use with my pc? Thanks in advance!!